Drift is a simple and general tool designed to measure inside size of casing, tubing, drill pipe and other pipes. Drift is a simple and general tool designed to measure inside size of casing, tubing, drill pipe and other pipes. Drifts are available in casing drift and tubing drift..Technical specifications and parameters: Casing drift(in)4 1/255 1/25 3/46 5/87O.D.(mm)92-95102-107114-118119-128136 ...